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California Bar Shooter Had Domestic-Disturbance History After Serving in Afghanistan

Ian Long had served in combat with the Marines; police were summoned to his home earlier this year, according to neighbors

Twelve people were killed after a gunman opened fire at the Borderline Bar & Grill country-music bar in the city of Thousand Oaks in Southern California. The suspect, identified as Ian Long, was also confirmed dead. Photo: AP

THOUSAND OAKS, Calif.—Ian David Long, identified as the gunman in a mass shooting here, was a high-school baseball player remembered as a perfectionist who dropped the sport his senior year in part to focus on joining the military.

When Long’s baseball coach sat down to write about him in a yearbook, one word came to mind: “Intensity!”